Push button electric switch



' 19 1927. July F. DECRAENE PUSH BUTTON ELECTRIC SWITCH Filed April 6.1925 IN-VJEN'I' an:

FE'LQ; IIEBRHENE. 1% F] T T u HNEY.

Patented July 19, 1927.

UNITED STATES PATENT OFFICE.

FELIX DECRAENE, OF IPANTIN, FRANCE.

PUSH BUTTON ELECTRIC SWITCH.

Application flied April 6, 1925, Serial No. 21,173, and in France April14, 1924.

The object of my present invention is to provide an electric switch,involving the principle which consists in transforming straight orrectilinear movement into oscillatory movement.

My improved switch which is simple in construction and excellent inefliciency has all qualities which may be required from such anapparatus: itis neat in appearance,- requires little room and is mostpractical in use. q

The improved switch is characterized by a suitably shaped rocker,rocking to the right or the left; said rocker will be operated by meansof tongues which are alternately pushed by a button on which pressure 1sproduced.

The invention is illustrated by way of example only in the accompanyingdrawings, wherein:

Fig. 1 is a sectional view of the apparatus in its inoperative position:the button A made of insulating material is disengaged from the.apparatus; the rocker B belng apart from the clamps C, the circuit willbe open, the electric current being, supplied by means of conductingwires to said clamps.

Fig. 2 is a sectional View of the apparatus with the button A fullypushed inwardly; the rocker B being engaged into the clamps C, thecircuit of the current will be closed.

Fig. 3 is a section taken on a plane at right angles to Figs. 1 and 2.

Fig. 4 shows details of the clamps C.

Fig. 5 shows the rocker B.

Fig. 6 shows the supporting bracket D.

Fig. 7 shows the tongues E and F.

- Referring to Fig. 1, the tongues E and F provided with bosses as shownin Fig. 7, are pressed against the central shank 1 of the button A bymeans of springs arranged on the axles 2 and 3 respectively of saidtongues, said axles at the same time forming braces for the rocker B(Fig. 5).

The hollow central shank 1 is crossed by the axle a of the rocker B;said axle extends through longitudinal openings in said shank, wherebythe latter may be moved vertically.

The axle 4 secured in the supporting bracket D forms a supporting pointfor the spring'5 (Fig. 3) which is housed within the hollow centralshank 1; said spring, which is compressed if the button A is ful ypushed inwardly, will bring the latter back to its inoperative positionafter the use of the apparatus. Such backward or return movement islimited by the lower ends ,of the longitudinal openings which willengage theunderside of the axle 4. The whole formed of the button A andthe central shank 1 is guided at the top bythe part H through which thebutton A passes, and extending from its bottom part is the axle 4 whichextends through said central shank. Said part H onto which the cover Iis screwed, is secured on the base G made of insulating material bymeans oftwo screws which at the same time fasten the bracket D insulatedfrom the part H by means of nonconducting or insulating washers.

The clamps O are held on the base G by terminals K into which conductingwires are inserted and clamped by means of screws (Fig. 4) Operation:The apparatus being in itsjnoperative position (Fig. 1), the button Awill project outwardly under the action of the spring 5: the'tongue Ebears against the central shank 1 just below the button A; pressureproduced on the button A will cause the rocker B to rock through theagency of said tongue E; the movement of the rocker B, similar to themovement of a balance beam, causes the tongue F to be raised accordingas the tongue E will be lowered.

The tongue E submitted to the pressure of the button A cannot be'movedapart from the central shank 1. It is not the same for the tongue Fwhich being free at its top, will be moved apart from said shank 1 bythe pressure of the bosses on tongue E against the bosses on tongue F.Such movement of tongue F will be at a maximum if the button A is abouthalf-way, whereby said button maybe further depressed without engagingthe tongue F, the bosses of which will be temporarily located in theapertures a in the button A whilst the latter will complete its stroke.

At this moment as the pressure on the button A is fully exerted (Fig.'2) the arms of the rocker B will be engaged in the clamps 0, wherebythe passage'of the electric current will be secured.

The spring L will hold the rocker B in this position after havingaccelerated the movement.

Pressure being released from the buttontongue F, owing to thespringarrangei on its axle 3, will be moved below the button A, wherebthe apparatus will be ready for producmg a reversed effect.

As the apparatus above described only uses the left hand arms of therocker, it consti tutes a single direction switch. The same may betransformed to a two direction or reclproca'ting switch by placingclamps similar to clamps C in front of the right hand arms, of therocker B.

Having now fully described my said invention, what I claim and desire tosecure by, Letters Patent, is:

1. A push-button switch including a casing, a push-button operable inthe casing and formed at its lower end with a slot, a shaft mounted inthe casing and extending through the slot to limit the movement of thepush button, a switch blade pivoted on the shaft and tongues pivotallymounted on the blade on opposite sides of the shaft, said tonguesbearing against, but being free of connection with the push button, thepush button being formed with shoulders to engage 'the uppermost tongueon the depression of the button to thereby operate the blade.

2. A push-button switch including a casing, a push button operabletherein and having a reduced lower shank, a blade mounted for pivotalmovement in the casing, tongues pivotally connected to the blade onopposite sides of the pivot thereof, said tongues bein of U-form toimpress the shank of the utton, and springs for holding the tongues insubstantial contact with said shank, the shank formation of the buttonforming shoulders to engage the uppermost button and depress the same tocorrespondingly operate the blade on its pivot.

In testimony whereof I have hereunto set my hand.

FELIX DECRAENE.

